Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Allowance for doubtful accounts	$ 152	$ 82
Accumulated depreciation	17,406	15,767
Accumulated amortization	$ 3,658	$ 3,203
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in Shares)	40,000,000	40,000,000
Common stock, shares issued (in Shares)	24,334,515	24,213,467
Common stock outstanding (in Shares)	24,334,515	24,213,467